“All 18 commissary carts and two commissary counters at Grand Central Terminal have been taken out of service as of Dec. 7 because of an ongoing investigation initiated by Metro-North,” Metropolitan Transportation Authority spokesman Aaron Donovan said in a statement. “They will remain closed while the investigation continues.”

Jim Cameron of the Commuter Action Group said of the carts’ removal, “The timing is unfortunate given that this is a time when people like to party” and should be able to have an alcoholic beverage “in a responsible manner.”

He added that alcohol sales likely help subsidize the commuter railroad’s finances.

The bar carts brought in $6.4 million in revenue in 2013, the DOT has said.

An online petition asked Metro-North to “maintain the sanctity of the bar carts” and restore them to service by next Monday.